Epoxy resins are an important class of thermosetting plastics and are widely used in adhesives, coatings and other applications. Also known as artificial resin, artificial resin, resin glue, etc. Epoxy resins are thermosetting epoxy polymers. Most synthetic resins are produced by the chemical reaction of epichlorohydrin (C3H5ClO) and bisphenol A (phenol methane) (bisphenol-A) (C15H16O2).
What is an unsaturated resin? The earliest resin discovered by humans is a fatty substance extracted from the secretions of trees, which is why there is a "tree" before "resin".
The fusible resin that can be heated, melted, cooled and solidified, and can be repeated repeatedly is called thermoplastic resin. After heating and curing, it is no longer reversible and becomes a solid that neither dissolves nor melts. It is called thermosetting resin, such as phenolic resin, epoxy resin. , unsaturated polyester resin, etc.
To sum up, epoxy resins contain diepoxy groups, which require amine-based curing agents to participate in the curing reaction. The properties of the final product and curing agent are great, but in general, the final cured products of epoxy resins are better than unsaturated polyesters. The cured product of resin has high hardness and strength. Of course, the price of epoxy resin is twice that of unsaturated polyester resin. Generally, unsaturated polyester resin is selected for artificial stone because it is cheap. For floors and anti-corrosion coatings, epoxy resin will be chosen because of its better performance.